Breast box for paper machines



y 1941- EH. WILLIAMS 2,241,688

BREA ST BOX FOR PAPER MACHINES Filed June 12, 1940 2 Sheets-Sheet 1 1N VENTOR.

ATTORNEY.

F. H. WILLIAMS 2,241,688 BREAST BOX FOR PAPER MACHINES Filed June 12, 1940 May 13, 1941.

2 Sheets-Sheet 2 ZZZ INVENTOR ATTORNEY.

per-making apparatus Patented May 13, 1941 UNITED STATES PATENT OFFICE 2.241.888 aanas'r BOX roar-ma moms Frank E Williams, Dalton,

Crane 8; 00., Inc., Dalton,

of Massachusetts Mesa, assignmto Man, a corporation 14 Claims.

. This invention relates to improvements in paand is directedgnore particularly to improvements in abreast box construction adapted for use with paper makingmachines of the Fourdrinier type.

The principal objects of the invention are directed to the provision of a breast box which is characterized by relativelymovable co-operating forward andrear sections arranged and adapted for association with thebreast roll and shake mechanism and screen of the paper making machine insuch a manner that paper making material is delivered from the screen to the novel breast box and then onto the wire.

According to certain novel features vention the construction and arrangement is such that there is a greatly improved leveling.

of the in fully described and referred to in connection with the accompanying drawings wherein:

Fig. 1 is a side elevational view of a breast box embodying the novel features of my invention and shown in' association with the breastroll and screen of a paper-making machine;

Fig. 2 is a longitudinal elevational sectional view of the breast box shown in Fig. 1; and

Fig. 3 is a plan view of the breast box shown in Figs. 1 and 2.

Referring now to the drawings more in detail, the invention will. be fully explained.

and intermixing or intermingling of the paper making fibers which bringsabout an improved paper formation and strength of web. The improved mixing of fibers and their uniform distribution results in paper having desirable characteristics as to formation, strength,

' and texture not only as is desired in somepar-' ticular grades vbut more generally in connection with all grades where are concerned such important considerations as closeness of formation, strength, etc.

'According to other novel features of the invention not only is it possible to provide the desired. strength and closeness of formation with respect to various grades of paper but the speed of the paper machine impairing the improved characteristics of the paper resulting from the use of the apparatus.

According to further features of the invention the construction is such that there is a relatively-small loss of stock on shut do rather shallow construction of the' novel breast box facilitates ease of'control when starting the paper machine on a run.

According to still further features, of the in-. vention the novel breast box is constructed of metal to facilitate ease in cleaning and providing rigidity and strength while at the same time the stock is delivered to the wire substantially free from strings and lumps.

p The "novel breast box of the invention embodies numerous other features to provide many other new and varied advantages as will appear in certain'novel features of construction and in and arrangement of parts as be hereinafter more particularly pointed out in the claims the combination hereunto annexed and more may be increased without --made without departing from the spirit' It will be understood that the novel features of the invention are adapted for use in connection with various Fourdrinier paper making ma chines and that the embodiment of the invention to'be described is for purposes of disclosure only since-modifications and changes may be and scope of the invention.

In a broad way the breast box of the invention includes a rear section indicated by 2 and a forward section indicated by 4. The rear section is adapted to be assoc'iated'with the screen apwns and the paratus of a paper machine while the forward section which is movable relative to the rear section may be associated with the wet end of the machine at the breast roll.

With reference to the drawings, Fig. l, as shown, the reference 6 represents the forward wall of a screen to which opposite side walls 8' of the rear section 2 may be secured by any suitable means such as bolts l0 tofacilitate up and down movements of said side walls and the securing thereof in adjusted positions. The side walls 6, as shown in Fig. 3, are arranged in diverging relation and spaced supports ,II which are disposed therebelow have blocks l2 thereon which threadedly receive adjusting screws It. The upper ends of the adjusting screws 14 abut members l6 of a transverse member l8 which supports the side walls at their forward'ends. The member l8 may be clamped to the supports II in adjusted positions by means of bolts such as 20 or the like. The side walls 8 may be adjusted up and down to any desired position of adjustment by means of the bolts l4 and are tied together by means later to be described.

Side walls 24.'of the forward section of the breast box are disposed outside of the side walls 8 and they are connected together and held in spaced relation by means to be later. described. .A breast-roll is represented by 26 which is j'ournalled in the usual manner for rotation in brackets 28 pivoted on horizontal axes in members 30 on either side of the machine. The brackets and breast roll are vibrated back and forth transversely of the machine in the usual manner by any suitablevibrating mechanism not shown. Brackets such as 32 there being one on Other members such as 44 and-46 extend between the walls 24 and adjusting bolts 48 or screws associated therewith abut lugs such as 50 of the end members 40. By means of the bolts 48 the plate structure 34' may be adjusted up and down for adjusting and leveling purposes.

Screws or bolts 52 threadedly engaging the side walls 24 are disposed in slots of the members 40. as shown, to provide a means for clamping the plate structure ina desired position of adjustment. Other means than shown may be used for adjusting and securing the plate 42 in place.

A support 56 extends between and is secured to the side walls 8 adjacent the forward portions thereof. This support in a form of the invention shown is preferably tubular in form to-provide rounding surfaces, as shown, and connected to the walls 8 serves to hold them. in spaced -relation.

from the screen and generally ina downwardly direction and is secured at opposite sides to the side walls 6.

Said plate 58 curves forwardly and downwardly and while continuing forwardly more or less it extends upwardly and rearwardly through a generally semi-circular portion below and adjacent the rear side of the support 56 and finally continues around the member 56 and terminates at 62 forwardly thereof.

The plate 58 may be of any suitable material but will be preferably of sheet metal such as relatively thin copper or the like. To reinforce the forward end portion as may be necessary and desired, a transverse reinforcing member of any desired form may be secured. thereto. Such Members 10 of the breast roll brackets 28 carry plates 'I2'to which are clamped as by bolts 14 a transverse member I6 associated with the walls 24, Adjusting screws 18 in threaded engagement with projections 80 abut members 02 so that as the adjusting screws are adjusted the forward end portion of the breast box forward section may be raised and lowered and clamped in the desired position of adjustment in which the forward section may be vibrated with the breast roll.

A support 94 extends between and is secured to the-walls 24 and this may be similar to the support 56 already described. A plate or bottom -wall 96 extending at'f its rear portion at least partly around the pipe 68 extends downwardly and forwardly to a curving or more'orless'semi A bottom plate or. wall 58 extends forwardly 2,241,688 each side of the machine, are for supporting the circular section 98 and then upwardly and around the support, with the forward end I00 thereof extending somewhat beyondthe said plate 42.

The pipe 68 and plate or wall 96 thereover are proVided With apertures or discharge ports-69 for directing water upwardly and forwardly so that a spray thereof takes a generally forward and outward direction from between the upper rear portion of plate 96 and the forward portion 62 of plate 58. be connected to any suitable source of supply.

On the plate-42 there is what may be called an apron member I02 which may be of any suitable material although a sheet of rubber or of rubber composition has been found to be satis-. factory. The said apron member I02 extends beneath the forward portion I00 of the plate 96 andat its forward end it may extend beyond'the plate 42. to some extent so as to overlie the Fourdrinier wire and the breast roll for'delivery of paper making material thereonto. The side walls 24 of the forward section have outwardly extending portions25 and the side marginal portions of the member I02 are carried outwardly and upwardly against said extension 25 while plates I06 clamp the marginal portions of the member I02 in place. It will be understood that the opposite marginal portions of member I02 may besecured to the walls 24, in any manner a desired in order to close in the sides of the breast box. The particular construction described is not necessarily the only way in which this may be accomplished. The apron extends but a short distance beyond plate 42 onto the wire and does not necessarily require padding. The apron is readily changed due to,the way-it is carried by forward section of the breast box may be carried by the breast roli structure and is movable rela tive to the rear section so that as the breast roll and wire are vibrated back and forth the forward section of thebreast box is vibrated therewith, the said forward section functioning as an additional making portion of the Fourdrinier machine so as to deliver the stock in the manner desired onto the wire. Y

The stock flows from thescreen downwardly on the wall 58 and then upwardly and rearwardly and over and forwardly onto the wall 66 where in like manner it flows downwardly and upwardly and slightly .rearwardly and finally up and over onto the apron. The general direction of the flow of the stock is indicated by the arrows. The forward section may be vibrated or have shake imparted thereto while the stpck is flowing from the screen onto the wire.

- The bottom walls 58 and 96 are constructed and arranged in combination with their asso-.

the stock as it. passes through thg breast box The said pipe 68 may, of course,

of the novel breast box to be embraced therein.

from one section to the other and further functions to prevent stock from running backwardly between the plates which would tend to cause lumps and strings.

It will be .observed that the various elements are independently ad justable in order to provide for the desired relativepositioning of the parts to accommodate the the rear end of the other apparatus to various conditions and produce various results, it and deliver-it to the wire with the fibers properly intermingled and uniformly other important characteristics.

WhileI have described detail and with respect to the present preferred form thereof, it is not desired .to be limited thereto since changes and modifications may be made therein without departing from the spirit and scope of the invention. The invention may be embodied in other specific forms without'debeing desired to level the stockthe invention in great I distributed so as to insure the desired formation, strength, and

I with the forward end of walls with the side walls of the rear section diverging outwardly and forwardly, the bottom walls of each section extending forwardly .and downwardly and then curving upwardly and rearwardly and then upwardly and forwardly the bottom wall of the rear sections extending overand spaced from bottom wall to provide a space, a perfbrated pipe associated with the rear end of the bottom wall of the front section fordirecting liquid generally forwardly from said ace, and a substantially horizontal plate between the side walls of the forward section having its rear end disposed beneath the forward end of the bottom wall of said rear section.

5. A breast box for a paper-making machine comprising in combination,- separate forward and rear sections adapted for relative sidewise parting from the essential characteristics thereof. The present embodiments .are therefore to 'be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by'the foregoing description, and all changes which come within the meaning and range of equivalencyof the claims are therefore intended What it is desired to claim and secure by Let ters Patent of the United States is:

1. A breast box for a paper-making machine comprising in combination, separate forward and rear sections each having side walls, each section having a lower wall between said side walls that extends forwardly and downwardly and then curves upwardly and rearwardly and finally upwardly and forwardly with the forward end of the lower wall of the rear section extending over the rear end of the other lower wall.

2. A breast box for a paper-making machine comprising in combination, rear sections eachhaving side and lower walls,

the lower wall of the forward section between the side walls thereof extending downwardly and forwardly and curving upwardly and rearwardly and then upwardly and forwardly, the lower wall of the rear sectiori between the sidewalls thereof extending downwardly and forwardly and upwardly and rearwardly and then upwardly and forwardly over the rear end of said "first named lower wall, the forward section being supported relative to the rear section for sideways vibrating movements. v v

3. A breast box for a paper-making machine comprising in combination, separate'forward and separate forward and shaking movementseach having side and bottom walls with the side walls of the rear'section diverging outwardly and forwardly, the bottom walls of each section extending forwardly and downwardly and then curving upwardly andrea'rthe side positions,

' forwardly rear sections adapted for relative sidewise shakipg movements each having side'and bottom walls with the side walls of the rear s'ectiondiverging outwardly and forwardly, the bottom walls of. each section extending forwardly and downwardly and then curving upwardly and rearwardly and then upwardly and forwardly with the forward end a space, and a the rear end of the section for directing from said space.

4. A breast boxfor bottom wall of the front of the bottom wall of the 5 rear sections extending overand spaced from the rear end 'oftheother bottom wall to provide perforated pipe associated with liquid generally forwardly I roll supports wardly and then upwardly and forwardly with the forward end of the bottom wall of the rear sections extending over and spaced from the rear end of the other bottom wall to provide a space, I a perforated pipe associated with the rear end of the front section for directforwardly from said' space, a substantially horizontal plate between the side walls of the forward section having its rear end disposedbeneaththe forward end of. the bottom wall of said rear section, and means to adjust and hold said plate in various horizontal positions. 6. A breast box for a paper-making machine comprising in combination,

of the bottom wall ing liquid generally separate forward and rear sections adapted for relative sidewise shaking movements 'each' having side and bottom walls with the' side walls of the rear section diverging outwardly and forwardly, the bottom walls of each section extending forwardly and downwardly and then curving upwardly and rearwardly 'and then upwardly and forwardly with the forward end of the bottom wall of the rear sections extending over and spaced from the rear end of the other bottom wall to provide .a space, a perforated pipe associated with the rear end of the bottom wall of the front section for directing liquid generally forwardly from said space, a substantially horizontal plate between walls of the forward section having its rear end disposed beneaththe forward end of the bottom wall of said rear section, means to adjust and hold said plate in various horizontal and a member on said plate extending thereof and extending upwardly at the opposite sides thereof and secured to said side walls." I v j 7. The combination with the movable breast at the sides of a paper-making machine and the forward wall of a screen-spaced rearwardly therefrom and a breast box therebetween comprising, a rear sectio ,having diverging side walls adjustably secured at their rear ends to said'screen, a forward section having side walls 'adjustably'fixed at their-forward ends to said supports-and supporting means at the rearend of the forwa section to facilitate vibration of said section relative to the rear section with said breast, roll supports, bottom walls for said sections each extending forwardly and down wardly and curving upwardly and rearwardly ing movements each having side and bottom -and then upwardly and forwardly with the forward end of the wall of the rear section spaced bove and overlying the rear end of the wall of the forward section, and a substantially horizontal plate between the side walls of the forward section extending forwardly of the bottom wall of said section with its forward end disposed so as to be adjacent'a breast roll in said supports.

8. The combination with the movable breast roll supports at the sides of a paper-making ward end of the wall of the rear section spaced above and overlying the rear end of the wall of the forward section, a substantially horizontal plate between the side walls of the forward sec-v tion extending forwardly of' the bottom wall of said section with its forward-end disposed so as to be adjacent a breast roll in said supports, and a member overlying said plate with its forward edge disposed to lie adjacent said breast roll and its side marginal edges associated with 'said side walls, and a pipe extending between I the side walls of the forward section associated with the rear portion of the bottom wall thereof provided with outlets fordirecting fluid from between adjacent portions of adjacent bottom walls.

9; A breast box construction comprising in combination, front'and rear relatively movable sections each having spaced side and bottom walls with the side walls of the rear section diverging outwardly from their rear ends, supports extendingbetween the walls of said sections, that support for the rear section disposed adjacent the forward ends of the side walls thereof and thatfor forward section disposed intermediate the ends thereof, a perforated spray pipe extending between the rear portions of the side walls of the forward compartment forwardly of the support of the rear section, theupper and rear sides of said.supports being in the form of cylinders, the bottom wall of the rear section extending forwardly and downwardly and then curving pwardly, rearwardly, and'then upwardlyand f rwardly of and beyond the support of 'said section, the bottom wall of the forward section extending forwardly and downwardly from side walls of the forward compartment forwardly.

of the support of the rear section, theupper and rear sides of said supports being in the form of cylinders, the bottom wall of the rear section extending forwardly and downwardly and then curving upwardly, rearwardly, and then upwardly and forwardly of and beyond the support of said section, the bottom wall of the forward section extending forwardly and downwardly from said spray pipe and curving upwardly and rearwardly and then upwardly and forwardly around the support of said section, and a plate between the side walls of the forward section forming a continuation of the "forward end of the bottom wall thereof.

11. A breast box construction comprising 'in combination, spaced side-walls, a bottom wall extending forwardly and downwardly and then upwardly, rearwardly and forwardly, an apron plate between said walls having its' rear end beneath the forward end of said bottom wall, ad-' walls of each section extending forwardly and- ,downwardly and then curving upwardly and said spray pipe and curving upwardly and rearwardly and then upwardly and forwardly around the support of said section. I 10'. A breast box construction comprising in curves upwardly and rearwardly and finally up-j combination, front and rear relatively movable sections each having spaced side and bottom walls with 'the side walls of the rear section diverging outwardly from their rear ends, sup

ports extending between the walls of said sections, that support for the rear section disposed diacent the forward ends of the side walls thereor and that for forward section disposed inter- 7 mediate the ends thereof, a perforated spray pipe extending between the rear portions of the rearwardly and then' upwardly and forwardly with the forward end of the bottom wall of the rear sections extendingover and spaced from the rear end of the other bottom wall to provide a space, and a perforated-pipe disposed adjacent the rear end of the bottom wall of the front sectiofi for directing liquid generally forwardly from said space.

.13. A breast box for a-paper-making machine comprising in combination, separate forward and rear sections each having sidewalls, each sec,- tion having a lower wall betweeii said side walls that extends forwardly and downwardly and then curves upwardly and rearwardly and finally up;- wardly and forwardly with the forward endof the lower wall-of the rear section extending over the rear end of the other lower wall supporting means for the rear section and adjustable connections. between said section and support? 14. A breast box for apaper-making machine comprising in-combination, separate forward and reansections each having side walls, each section having a lower wall between said side walls that extends forwardly and downwardly and then wardly and forwardly witlf the forward end of the lower wall of the rear section extending over the rear end of the lower wall, supporting means for the forward end of the forward section, and supporting means at the rear end of said section to permit sideways vibratingmovements of said section relative to the rear section including, a transverse member below said forward section and-rolls thereon lournalled on said forward section. a 

